Registering as an overseas elector, step by step

The form is quick; the part that can take a while is proving you once lived at your old UK address, so start well before any election.

The short version

You can register if you're a British citizen (or an eligible Irish citizen in Northern Ireland) who has previously lived in the UK or been registered to vote there [1][5]. How long ago you left doesn't matter [7].
England, Scotland and Wales: apply online at GOV.UK. Northern Ireland: paper form to the Electoral Office for Northern Ireland [1][5].
You'll need your National Insurance number, your date of birth, your passport details (even an expired passport) and the postcode of your last UK address [2][5].
If your council can't match you to that address, you'll be asked for a document with your name and the address on it, or an attestation from someone who knew you there [5][8].
Registration lasts about three years, and a postal or proxy vote is a separate application [5][6].

This guide goes deeper on the application itself. For the big picture, start with our guide to voting from abroad and votes for life.

Check you qualify first

The Electoral Commission sets out two conditions. You must be a British citizen (which includes eligible Irish citizens and citizens of the Crown Dependencies), and you must have either been registered to vote in the UK or lived in the UK [5]. Since the Elections Act changes, the old 15-year cut-off has gone: you can register "no matter how long ago" you left or were last registered [7].

A few cases people ask about:

Your situation	Can you register as an overseas elector?
Left the UK as an adult, was on the register	Yes, at the address where you were last registered [5][6]
Lived in the UK but never registered	Yes, at the address where you last lived [2][5]
Left the UK as a child	Yes, if you lived there. You'll also give a parent's or guardian's details and a copy of your birth certificate [5]
British but never lived in the UK	No: the rules need past UK residence or registration [5][6]
Armed forces, Crown servant or British Council posting	Use the service or Crown servant routes instead [1]

If you're only away for a few months and still have a UK home, you don't need the overseas route at all. GOV.UK flags that the rules differ if you'll just be temporarily abroad on polling day [1].

The online application, step by step

GOV.UK says registering "usually takes about 5 minutes" [2]. The Electoral Commission says you can also download a paper form, and some councils take applications by phone, so ask yours if online isn't working [5].

Have your documents to hand. National Insurance number, date of birth, passport (current or expired), and the full address and postcode of your last UK home [2][5]. Lost your NI number? You can still apply without it, but expect your council to ask for more evidence [2].
Start the GOV.UK Register to vote service and say you live abroad [2].
Give the address you're registering against. It's the last UK address where you were registered, or where you last lived if you never registered [2]. That address fixes your council and your constituency for as long as you stay on the register (see our guide to which constituency you vote in from abroad).
Complete the overseas declaration. This is built into the form for England, Scotland and Wales (details below) [5].
Upload any evidence you already have, such as an old council tax bill. You can add it during the online application, or send it later by email, post or by hand [5].
Apply for a postal or proxy vote straight after. Registering doesn't send you a ballot. You need a separate application [5]. Our guide to postal vote or proxy vote from abroad helps you choose.

What goes in the overseas declaration

The declaration is the legal bit that says you're entitled. According to the Electoral Commission it must include [5]:

your full name and current correspondence address abroad
a statement that you're a British citizen
whether you qualify through past registration or past residence
your British passport details, even if the passport has expired
if you have no passport, a statement explaining your citizenship and your date and place of birth
a statement that the information is true, and the date

One catch to watch: your council must receive the declaration within three months of the date on it. If it arrives later, it's rejected and you start again [5]. That matters mostly for paper forms sat in a drawer next to the PG Tips.

Northern Ireland is different

If your last UK address was in Northern Ireland, there's no online route. You download, print and complete the form and send it to the Electoral Office for Northern Ireland. You'll need your NI number and date of birth, plus British or Irish passport details. If you don't hold either passport, give the details of when you were granted citizenship, or your place of birth if you're a British citizen born before 1 January 1983 [5]. On the same form you can choose a proxy vote or voting in person. Postal votes aren't available to overseas voters registered in Northern Ireland [1][6].

Proving your identity and your old address

Your council's electoral registration office has to be satisfied that you are who you say you are and that you really lived at, or were registered at, that address. Your NI number and date of birth are used to check your identity [5]. Old electoral registers do a lot of the work on the address side. If those checks come up short, you'll get an email or letter asking for more.

Documents councils accept

Wandsworth Council's list is a good example of what's typical. The document must show your name (current or previous) and the relevant address, and it doesn't have to date from when you were registered [8]. Accepted documents include:

a UK driving licence, photocard or paper, even an expired one
a council tax bill or statement
a letter from HMRC, or a DWP letter about your State Pension
a P45, P60 or payslip
a bank or building society statement or passbook, or a credit card statement
a utility or mobile phone bill
a letter from a school, college, university or the Student Loans Company
probate papers, a solicitor's letter about buying the property, or Land Registry proof [8]

So that ancient Barclays statement in the loft box at your mum's is suddenly useful. Send copies, not originals, unless you're asked otherwise [8].

When you have nothing: the attestation

If you can't produce a single document with your name and that address, you can ask someone to complete an attestation form, confirming who you are and that you lived there [8]. Your council supplies its own form, and the form explains who's allowed to sign it, so read it before you ring round. If you email it, Wandsworth for one needs the person's signature as an image of a handwritten wet-ink signature, not a typed name [8].

If you left the UK before turning 18, expect a slightly different process. Councils may want a parent's details and your birth certificate, and Wandsworth asks people in that situation to contact electoral services first [5][8].

What happens after you apply

Stage	What to expect
Checks	The council matches your identity and address, and may ask for evidence [5][8]
Added to the register	Councils update the register monthly and before elections. Cornwall, for instance, adds new names on the first working day of each month [9]
Confirmation	If you haven't heard, ask your council: only they can tell you if you're on the register [6]
Postal or proxy	Apply separately, with its own deadlines [5][10]
Renewal	Your declaration lasts until 1 November in the third year after it takes effect [5]

Deadlines if an election is coming

When an election is called, the deadline to apply to register is 12 working days before polling day [9]. A postal vote application closes at 5pm, 11 working days before, and a new proxy application at 5pm, 6 working days before (Northern Ireland: 14 working days) [10][4]. Registration checks for overseas applicants can take time, so register long before you need it, not in the scramble after an election is announced.

The next UK general election hasn't been called. Parliament dissolves automatically five years after it first met, and the 2024 Parliament first met on 9 July 2024, so the latest possible polling day is Wednesday 15 August 2029, 25 working days after automatic dissolution [11]. It can come sooner if an earlier election is called.

Keeping it working

Make a note of when your registration will run out and keep your email address up to date with the council, since that's where the renewal reminder goes [1][6]. Our guide to renewing your overseas registration every three years covers that bit.

Who to contact

Your contact is always the council (or, in Scotland, the electoral registration office; in Northern Ireland, the Electoral Office) for your last UK address, not where you live now [5][3]. GOV.UK and the Electoral Commission both have postcode search tools to find them [3][6]. There's no overseas voting desk at British embassies, and you can't vote at an embassy, high commission or consulate either [5].

Registering as an overseas elector: the five-minute form and the bits after it